New research indicates vitamin D may be effective at reducing infections and colds. In this new study, researchers found that a group of young military men who supplemented with 400 IU’s (international units) daily for 6 months versus those who supplemented with a placebo experienced a significantly higher likelihood of having no days missed from work due to a respiratory illness. Moreover, of those taking the vitamin D supplement half remained healthy during the 6-month study as compared with approximately just one third of those taking the placebo. While more studies are needed, this new research does appear to indicate some benefits of vitamin D in reducing sickness or at least, the severity of sickness. It should be noted that vitamin D when taken in higher dosages is toxic and negative side effects can and do occur beyond 2,000 IU’s per day.